67984809972 has 12 divisors (see below), whose sum is σ = 158631223296. Its totient is φ = 22661603320.

The previous prime is 67984809931. The next prime is 67984809983. The reversal of 67984809972 is 27990848976.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 67984809897 and 67984809906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2832700404 + ... + 2832700427.

It is an arithmetic number, because the mean of its divisors is an integer number (13219268608).

Almost surely, 2^67984809972 is an apocalyptic number.

It is an amenable number.

67984809972 is an abundant number, since it is smaller than the sum of its proper divisors (90646413324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67984809972 is a wasteful number, since it uses less digits than its factorization.

67984809972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5665400838 (or 5665400836 counting only the distinct ones).

The product of its (nonzero) digits is 109734912, while the sum is 69.

The spelling of 67984809972 in words is "sixty-seven billion, nine hundred eighty-four million, eight hundred nine thousand, nine hundred seventy-two".